Lidl water

[Elliott 22]

My last few brews I’ve used Lidl’s 17p bottled still water and they have all been astringent

I am currently doing extract brews using pure brew, fermzilla and close transfer.
I used to use Aldi water and never had this? Any idea
I have also been using chemclean to clean my fermzilla and then swilling with water before sanitising with chemsan.

any idea what’s gone wrong?
Thanks for any help

 

[Bombers hoppy ending]

I’ve been using Lidl water for my last 4 brews and as far as I can tell it’s been fine.